biggest is without a doubt my mosin nagant 91/30s one is sporterized, the other is still dressed in mother russia's finest. both are the largest in my collection.

loudest is my AR15 believe it or not. my family refuses to let me take it hunting anymore....freaking pansies...

most powerful is my 300 weatherby mag. 180gr soft points penetrate 3/4" steel. I loaded up some black tips for it but I haven't been able to find anything worthy of testing it on

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ignore my complete lack of capitalization. I still have no problem correcting your grammar.
I never said half the stuff people said I did-Albert Einstein
You can't believe everything you read on the internet-Benjamin Franklin